Axially shifting type adjustable tire removing machine



.1. H. TILLOTSON AXIALLY SHIFTING TYPE ADJUSTABLE TIRE REMOVING MACHINE J.H. TILLOTSON April 18, E954) Filed Dec. 17, 1946 April 18, 1956 J. H. TILLOTSON 2,54l,,7$ AXIALLY SHIF'TING TYPE ADJUSTABLE TIRE REMOVING MACHINE April 18, 1 J. H. TILLOTSON 2,504,760

- AXIALLY SHIFTING TYPE ADJUSTABLE TIRE REMOVING MACHINE J. H. T I LLOTSON April 18, 1950 J. H. Tl LLOTSON 2,504,760

AXIALLY SHIFTING TYPE ADJUSTABLE TIRE REMOVING MACHINE Filed Dec. 17, 1946 4 Sheets-Sheet 4 FIG.6.

WINE g nmwm J.l-I. TILLOTSON Patented Apr. 18, 1950 AXIALLY SHIFTIN G TYPE ADJUSTABLE TIRE REMOVING MACHINE James H. 'lillotson, Spartanburg, S. 0.

Application December 17, 1946, Serial No. 716,728

3 Claims.

My invention relates to a machine for removing tires or casings from rims.

An important object of my invention is to provide a machine of the above mentioned character, which is particularly adapted for removin the casings from the rims of heavy trucks, buses, and the like.

A further object of the invention is to provide a tire removing machine which is adjustable for operating on tires and rims of different sizes.

A further object of the invention is to provide a machine of the above mentioned character which is operated by fluid pressure for removin the tire from the rim.

A still further object of my invention is to provide a machine for removing tires which is simplified in design, extremely strong and durable, and which may be conveniently operated by a single attendant.

Other objects and advantages of the invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this application, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a plan view of the tire removing machine embodying my invention,

Figure 2 is a side elevation of the same, parts broken away,

Figure 3 is a horizontal section taken on line 3--3 of Figure 2,

Figure 4 is a horizontal section taken on line l-4 of Figure 2,

Figure 5 is an enlarged vertical section taken on line 5-5 of Figure 4, parts broken away,

Figure 6 is a fragmentary vertical section taken on line 6-6 of Figure 1,

Figure 7 is a vertical detail section taken on line l-! of Figure 5,

Figure 8 is a horizontal section taken on line 8-8 of Figure 7,

Figure 9 is a vertical detail section taken on line 9--9 of Figure 5,

Figure 10 is a horizontal section taken on line Ill-l0 of Figure 9,

Figure 11 is a plan view of a main plate, and,

Figure 12 is a fragmentary vertical section taken on line l2l2 of Figure 3, and,

Figure 13 is a fragmentary vertical section through a slightly modified form of casing engaging head.

In the drawings, where for the purpose of illustration, is shown a preferred embodiment of my invention, the numeral 15 designates a pair of vertical rectangular frame members, which are curved at their upper corners as shown at IS. The frame members l5 include lower or bottom horizontal rails I1, and top horizontal rails H. The frame members I5 are connected near their longitudinal centers with transverse horizontal rails l8, by means of welding, or the like. The top surfaces of the rails l1 and I8 are flush. The rectangular frame members ii are preferably castings. The numeral 19 designates diagonal track rails, arranged at right angles to each other, and rigidly connected at their inner ends. These track rails [9 are rigidly mounted upon the rails l1 and I8, by means of welding, or the like. The track rails I!) are preferably I-sections, having the usual horizontal flanges 20 and a vertical web 2|. Opposed pairs of rim engaging heads 22 are slidably mounted upon the track rails l9. These heads 22 include depending side extensions 22', carrying inwardly projecting portions or fingers 23, which engage beneath the upper horizontal flanges 20 of the track rails 19, see Figure 9. The heads 22 are provided at'their tops with rests 23, having outer circularly curved recesses 24, and circularly curved horizontal shoulders or stops 25 at the bottom of these recesses. The recesses 24 receive the edge of a rim 26, after the conventional removable bead has been separated from the rim. The rim 26 also has an integral bead 26'. Means are provided to shift the heads 22 in each opposed pair radially in opposite directions simultaneously, comprising depending ears or plates 21 welded to the side extensions 22, and carrying screwthreaded rings or nuts 28, rigidly secured thereto. The screw threaded nuts 28 receive the screw threaded portions 29 of horizontal shafts 30, turned by cranks or handles 3|, or the like. The screw threaded portions 29 of each shaft 30 are right and left hand screw threaded, so that the heads 22 in each opposed pair move in or out radially, when the shafts 3|] are turned in the proper direction.

Each shaft 30 is held against end or axial movement by brackets 32, which are rigidly mounted upon the rails l'1, adjacent to the shafts 30. The upper ends of the brackets 32 have openings which rotatably receive the shafts 30, and these upper ends engage between collars 33 rigidly secured to the shafts.

Near the top of the frames 15 there is a main horizontal plate 34-, arranged beneath the top rails l1 and rigidly secured thereto by means of welding and the like. Arranged above the top rails 11', areupper transverse spaced horizontal ends of'the cylinder.

vided at its lower end with a circular horizontal raising or lowerln'githe carriage. 48.

Slid'able upon the track beams 4 adjustable opposed-pairs of casing engaging heads '60. These heads 60 are preferably T-sections," as

plates 36, welded to the top rails IT. A vertical cylinder 31 is provided, positioned between the top rails I1 and the upper plates 36. The cylinder 3! has a plunger 38 therein, connected with a plunger rod 39, extending to the exterior of the cylinder, at its bottom, through a packing gland 40, or the like. The cylinder 31 has a removable 7 cover 4|, and is provided with air inlet-exhaust pipes 42-and 545. located near'u'pperand lower The cylinder 31' is profiange 44, which is secured upon the main horizontal plate 34by bolts 45, passing through open-- ings. 46 in the plate. The plunger. rod SQ -and packing gland 40 extend through. a central opening 41 in the main plate 34..

4 portions 65 of shaft 66. tions 65 of each shaft '66 are right and left hand screw threadedyand each shaft has a crank or handle 61 at one end. Brackets 68 are mounted upon the vertical webs of the track beams 49, and these brackets have openings to rotatably receive the shafts B6. The brackets engage against fixed collars 59 on the shaftsBB and hold the shafts against axial movement.

At their lower endsj'tli'e tire engaging heads 60 carry inclined plates or shoes l0, which pro- "Ject inwardly beyond the bead 26 of the rim 26,

' and the heads are provided with recesses H to The numeral 48 designatesavertically;mov-

able carriage, including diagonal track beams 49, 7

arranged at right angles to'each other, and rigidly connected at their inner ends by means of welding,'orthe like. Thetrack beams-49 are prefer I ably I-sections having the usual'rupper' and lower horizentaliianges and a vertical web. The outer 'ends oi'the-track beams. are rigidly connected by horizontal'strip's or plates iifljwhich. are Welded -to the seamen. Theseplates 50 are rigidly securedto theilower ends of verticalzguide rods or "posts which are slidab'le in openingsfiz formed in the main plate 3.4, and in openings 53 formed inthe plates 36; The plates 36 have reinforcing guide ringstd ivelded'rthereon, to serve as additiona1 guides for itne'posts 15 I. similar rings 55 provideclearance for the bead 26', see Figure 5. After the shoes 10 have cleared the rim flange 26', the heads are adjusted inwardly so that the inner edges ,ofthe shoes 10 are arranged close to the .outer periphery of the rim 26 and moved vertically downwardly to stripthe tire or casing 12 from the rim 26. The lower inner edges of the inclined shoes10 are 'iounded; as shown at'13, to prevent damage tome-casing 12-. v

The operation 'offtlie machine is as follows:

The carriage is moved to its up ermost position, by manipulation of the control-valve (not shown). The-rim engaging heads 22 are ad- 'are riijrelded to thci lower sides of the main plate sdfto further: guide. the postsfii as they move vertically The-carriage ais'has central Jectan- --gu1ar 'reinforc'ing'plates. 55 rigidly mounted upon its upper and lower surfaces; and the upper rein- I iorcidgplate it carriesa central screw threaded until-welded thereto. i This screwthreaded nut 5'! receives the-screw threaded end 53-01 the plunger rod 39. =A lock nut Eildsprovided-to "preventthe plunger rod :Bil-from turning after it is within'the nut iii. ,rIt'is thus seen that the plung r 381s positively connected 'with. the vertically movable carriage #8, to raise and lower the carriage. 'A' fluid under pressure; preferably "compressed air from any suitable source, in-

troduoed into either: end of the cylinder 31,

through either .;of therinlet-exhau st pipes 42 or 43; to raise and lower "the plunger. A suitable 'ralve is provided for supplying compressed air through either pipe, while exhausting air through the other pipe. It is thusseen that the plunger "381s pressure' actuated in' either direction. :for

9 are radially viewed-in"horizontal -crossesection;see Figure 8.

Each head to includes upper vertical extensions 7 or side plates 6 l carrying inwardly extending 'horizontal 'hngefs 62; which engage abovethe lower horizontal flange of the'associated track "beamsaitosuspend the head Bilitherefrom. "The heads 69' in eachopposed pair are adjusted radi-' ally-in or out bysimilar-mean's to those shown and-ldescribed-in connection with "the rim engaging heads '22. Forfthis purpose upstanding ears or plates 53aredetachab1y secured to the side extensions BI, and are provided upon their innet faces with screw threaded nuts 64: The-plate 163 has an opening 63,"to receive a lug64', integral withitneside plate 6|. The parts 63 and justed radially, by turning the handles 3|, and 'the'tire or oasin'g lzwith itsrimzt are placed upon the heads 22. The lower edge of the rim enters the circularly curved recesses 24, and it isseated upon the horizontal circularly "curved shoulders 25. The heads 22 may be adjusted into tight clamping engagement outwardly a ainst the inner surface of the rirnfif desired; The tire or casing engaging headsis are-now adjusted radially outwardly, by means of the handles 61, V

to such an extenttha't the inner rounded ends '13 of the shoes willclear the bead tfiwhen theoarriage 48 is moved downwardly The carridge 'isnow moved downwardly, b further manipulation of the control valve (not shown), and the lower ends is pass bythe head 26 and-en- "g'a'geupon the casing'lz. Asthe carriage desends the'shoes to begin to strip the casing 12 fronithe rimgand henthe lower 'ends it are slightly below the bead 26', the heads may be adjusted further inwardly,-s'oithat the; ends is come into close-spaced'relation with the outer periphery of the rim 28. 'The carriage 48 is now caused to descendfurther, and the shoes 'lil will strip the casing I2; from the rim 2B. The inclination of the shoes lid, and also the rounding of the lower ends 13 facilitate-the stripping of the easing from the rim, When the casing is completely stripped or removed'frorn the rim, the'heads so are adjusted radially outwardly, and the car- 7 r dge 4! is elevated to an upper position. The

rim 26 and the casing II-may now be conveniently removed from the machine.

In Figure 13 I haveshown a modified form of casing'engaging head'liil', corres onding to the head 6! Figure "7. This headed, Figure 13 need recess' l-l; and shoe lll' having a free end 13'. The shoe 1!! ap roaches the horizontal more than shoe-10;" r

7 It is to be understood that the forms of my invention herewith'snown and described are to be taken" as preferred examples of the same, and that various changes in the-shape, size, and arrangement of parts maybe resorted to with- V out departing from the spirit ofmy invention or the .scope of the subjoined claims.

'Having' thus described my'invention, what I clai mist g i 15A machine for removingtires froin'r'iin's,

The screw threaded porcomprising a substantially vertical frame, a horizontal group of heads mounted upon the lower portion of the frame andhaving jaws to engage the rim, a vertically movable carriage arranged within the upper portion-of the frame, and in cluding radial rails, pairs of adjustable carriages mounted upon the rails, a substantially vertical depending tire-engaging element rigidly mounted upon each adjustable carriage and provided at its lower ends with an inclined face to engage with the tire, an apertured lug rigidly secured to each adjustable carriage, a plate arranged near each adjustable carriage v and having an opening formed therein to removably receive the lug and forming spaced apertured parts, a pin passing through the aperture ofeach lug and the apertures of the companion parts for detachably securing the plate to its adjustable carriage, nuts rigidly secured to the plates, a rod for coaction with each pair of adjustable carriages and havin right and left screw threaded portions to en age with the nuts adjacent the pair of carriages, and means to hold the rod against longitudinal movement. 7

2. .A machine for removing tires from rims, comprising a substantially vertical frame, a hori zontal group of heads mounted upon the lower portion of the frame, and having jaws to engage the rim, a vertically movable carriage arranged within the upper portion of the frame and including radial rails, pairs of adjustable carriages mounted upon the rails, a substantially vertical depending tire-engaging element rigidly mounted upon each adjustable carriage and provided at its lower end with an inclined face to engage with the tire, and an apertured lug rigidly secured to each adjustable carriage and arranged upon the outer vertical face of the same, a vertical plate arranged adjacent to the outer vertlcal face of each adjustable carriage and having an opening formed therein to receive the lug and forming apertured parts, a pin passing through the aperture of each lug and the apertures of the companion parts for detachably securing the plate to the corresponding adjustable carriage, a nut arranged above each adjustable carriage, and upon the inner face of the vertical plate and rigidly secured to such inner face, a rod for coaction with each pair of adjustable carridges and have right and left screw threaded portions to engage with the nuts adjacent to each pair of carraiges.

13. A machine for removing tires from rims, comprising a substantially vertical frame, a horizijo'ntal group of heads mounted upon the lower portion of the frame and having jaws to engage the rim, a vertically movable carriage arranged within the upper portion of the frame and inclfuding radial rails. a pair of carriages mounted upon each rail to move longitudinally thereof, a are engaging element mounted upon each movable carriage, an operating rod mounted upon each rail and extending longitudinally of the rail and provided with right and left screw threaded portions, nuts engaging the right and left screw threaded portions of each rod, and means detachably connecting the nuts with the carriages in each pair so that such carriages may be disconncted from the nuts to be quickly moved longitudinally upon the rail.

JAMES H. TILLOTSON,

REFERENCES CITED The following references are of record in the file of this :patent:

UNITED STATES PATENTS 

